In the previous tutorial in this series, WoolseyWorkshop described how to connect to an Arduino WiFi by running a web server on the Arduino. But, running a local server comes with complications:
In order to extend this approach and allow your Arduino based server to be accessed over the internet, techniques such as port forwarding, external hosting, static IP addressing, or use of a Dynamic DNS service are required. Although doable, these techniques can be complicated, costly, or not very secure. For these reasons, they are not usually the best fit for hobbyists to access their Arduino devices over the internet.
This tutorial will instead utilize Adafruit’s Adafruit IO service to connect an Arduino to the outside world.
The post utilizes the latest version of the Adafruit IO Arduino library, updated for compatibility with external ESP32 WiFi modules, and serves as a good reference for getting started with Adafruit IO.
Stop breadboarding and soldering – start making immediately! Adafruit’s Circuit Playground is jam-packed with LEDs, sensors, buttons, alligator clip pads and more. Build projects with Circuit Playground in a few minutes with the drag-and-drop MakeCode programming site, learn computer science using the CS Discoveries class on code.org, jump into CircuitPython to learn Python and hardware together, or even use Arduino IDE. Circuit Playground Express is the newest and best Circuit Playground board, with support for MakeCode, CircuitPython, and Arduino. It has a powerful processor, 10 NeoPixels, mini speaker, InfraRed receive and transmit, two buttons, a switch, 14 alligator clip pads, and lots of sensors: capacitive touch, IR proximity, temperature, light, motion and sound. A whole wide world of electronics and coding is waiting for you, and it fits in the palm of your hand.